Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7401769 | Gas spring A method of manufacturing a gas spring including the steps of fitting and inserting a first seal member, an annular space member, a second seal member, and a rod guide, to an outer periphery of a piston rod in accordance with this order from a side of a piston, a st... | 07/22/2008 |
| 7353922 | Air damper An air damper includes a cylinder having a bottom, a piston received inside the cylinder to move freely back and forth coaxially, and an orifice provided in the piston. The piston is formed of a synthetic resin, and has a piston rod extending toward a side of the cy... | 04/08/2008 |
| 7281704 | Damping apparatus for moving furniture parts The present invention relates to a damping apparatus for moving furniture parts, for example doors, flaps or drawers. Such a damping apparatus of a compact construction which avoids a possible springing back movement of the furniture parts is provided in accordance ... | 10/16/2007 |
| 7278632 | Gas spring A gas spring for a pressing tool. A cylindrical chamber is divided by a piston into a first space and a second space. The piston is attached to a piston rod, which is axially moveable in the cylindrical chamber. The gas spring is designed with an opposing force to c... | 10/09/2007 |
| 7204184 | Guide system with pneumatic stop for a movable component In a guide system with a pneumatic stop structure comprising a cylinder with a piston including a piston seal element movably disposed in the cylinder and a piston rod connected to the piston and extending from the cylinder wherein a displacement chamber is formed a... | 04/17/2007 |
| 7182323 | Arrangement with a height-adjustable component An arrangement with a height-adjustable component includes an approximately vertically extending upright which bears the component, the upright including a pneumatic spring. The pneumatic spring has a cylinder having a bottom end connected to a fixed part of the arr... | 02/27/2007 |
| 7159482 | Electric actuator An electric actuator comprises a gear mechanism which transmits the rotary driving force of a rotary driving source, and a ball spline mechanism which includes a ball spline shaft provided movably back and forth from a connecting block to the outside and which conve... | 01/09/2007 |
| 7140601 | Independent and integrated compact air-bump stops A compact air-bump stop (jounceshock) provides improved motor vehicle suspension system accommodation of jounce and rebound than is provided than by a conventional shock absorber, bump cushion and/or air-bump stop. In an independent jounceshock, a primary shell and ... | 11/28/2006 |
| 7017928 | Bicycle A bicycle in one embodiment includes a frame and at least one adjusting device for adjusting at least one of a height of a saddle and a steering stem. The adjusting device includes a double-acting piston/cylinder assembly with a first cylinder chamber and a second c... | 03/28/2006 |
| 7011192 | Air cylinder with high frequency shock absorber and accelerator High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cyli... | 03/14/2006 |
| 6988600 | High frequency dampening apparatus A high frequency dampening apparatus for dampening the travel of a high frequency cycling driver. The present invention provides an enclosed housing having a fluid disposed therein. A piston rod is partially disposed within the housing and is engageable with a high ... | 01/24/2006 |
| 6968930 | Damper A damper includes a cylinder, and a piston rod inserted into the cylinder through an opening portion of the cylinder. The piston rod includes front and base ends, and a frictional engaging member provided on an outer surface along a longitudinal direction thereof ex... | 11/29/2005 |
| 6945372 | High frequency shock absorber and accelerator A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an aperture allow... | 09/20/2005 |
| 6899206 | Air cylinder with high frequency shock absorber and accelerator High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cyli... | 05/31/2005 |
| 6705201 | Activation device for a piston/cylinder unit A piston/cylinder unit, in particular a gas spring, includes a valve device for the operational motion of a piston rod. The valve device is activatable by an activation device, the activation device being connected near an actuation device and being connected to a l... | 03/16/2004 |
| 6688626 | Bicycle A bicycle includes a frame and a first and a second adjusting device for adjusting a height of front wheel and rear wheel suspensions. The adjusting devices each include at least one double-acting piston/cylinder assembly with a first cylinder chamber and... | 02/10/2004 |
| 6612410 | High frequency shock absorber and accelerator A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an ape... | 09/02/2003 |
| 6578832 | Air damper used in glove box of automobile An air damper comprises a cylinder having first and second openings at both ends, a piston that moves in the cylinder, a piston rod coupled to the piston and moving in and out at the first opening of the cylinder; and a cap positioned at the second openin... | 06/17/2003 |
| 6564976 | Visco elastic displacement controller A deformable polymeric member is drawn or forced through or over a die at an imperceptible rate of travel whereby the visco elastic characteristics of the polymeric member delay and control the displacement for external utility. With appropriate component... | 05/20/2003 |
| 6460839 | Air damper for a movably supported structural part, in particular in automobiles An air damper for a movably supported structural part in automobiles comprises a hollow cylinder closed at one end thereof, a closure cap mounted on the other end of the cylinder, a piston slidably guided within the cylinder, an annular recess at the circ... | 10/08/2002 |
| 6454061 | High frequency shock absorber and accelerator A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an ape... | 09/24/2002 |
| 6352271 | Cylinder for improving the handling of a vehicle in turns A hydraulic and pneumatic cylinder (10) for use on a vehicle (100) to improve the handling of the vehicle in a turn or curve. The cylinder repositions the rear wheel (108) of the vehicle in response to a change in the speed of the vehicle. When the vehicl... | 03/05/2002 |
| 6199837 | Thermoplastic elastomer air spring An air actuator has a rigid piston at one end and a rigid housing and end cap at the other end with an intervening elastomeric flexible sleeve extending therebetween which forms a fluid pressure chamber. The rigid piston, elastomeric flexible sleeve, and ... | 03/13/2001 |
| 6170806 | Piston/cylinder assembly A piston/cylinder assembly includes a cylinder and a piston received in the cylinder for axial movement and dividing the cylinder into two working chambers. A first connecting member is affixed to the cylinder and is adapted to connect the cylinder to one... | 01/09/2001 |
| 6086059 | Gas spring device A gas spring device is provided with a safe and effective way to reduce to zero the velocity of a piston rod which is traveling at a high velocity in the gas spring device during a failure of the gas spring device. This achieved by stopping the piston rod... | 07/11/2000 |
| 6056277 | Air spring arrangement The invention relates to an arrangement which includes an air spring (2), an ancillary volume (4) and a connecting line (6) which connects the air spring (2) and the ancillary volume (4) to each other. A valve (12), which is actuated by air pressure, is d... | 05/02/2000 |
| 6032974 | Device for retaining a boot on a gliding board adapted for snowboarding The invention relates to a device for retaining a boot on a gliding board. The device includes especially a dorsal support element and a base, the dorsal support element being journalled on the base along a substantially transverse Y-Y' axis of the device... | 03/07/2000 |
| 6024343 | Air spring for air spring axles An air spring has a piston having an upper end and a lower end. A roll bellows having a first end connected to the upper end of the piston is provided. A cover is connected to the second end of the roll bellows. The lower end of the piston is open and has... | 02/15/2000 |
| 5964454 | Piston cylinder unit with a piston having tolerance compensation A piston-cylinder unit includes a cylinder having an axis and an inner surface and a piston assembly attached to a piston rod and received in the cylinder for axial movement. The piston assembly includes a piston body, which has a plurality of radially re... | 10/12/1999 |
| 5915674 | Adjustable-length gas spring An adjustable-length gas spring comprises a housing and a piston rod led out of the latter, on which a piston is disposed, dividing the housing into two partial housing chambers. Provision is made for a valve for the partial housing chambers to be connect... | 06/29/1999 |
| 5887857 | Gas spring A gas compression spring comprises a gas-filled cylinder in which a piston carrying a hollow piston rod is slidable and divides the interior of the cylinder into first and second chambers. Over part of the length of the cylinder, a groove is provided in t... | 03/30/1999 |
| 5775677 | Air or gas sprung and dampened shock absorber An air or gas sprung and dampened shock absorber for a bicycle is set forth comprising a cylinder having a closed end and an open end forming a compression chamber, a shaft having a closed end and an open end, the open end of the shaft being reciprocally ... | 07/07/1998 |
| 5728174 | Swing phase control for an artificial knee joint A swing phase control for an artificial knee joint is provided with a cylinder (1) having one end closed by a head member (2) and the other end closed by a base member (3), a piston reciprocally movable within the cylinder in axial direction thereof and h... | 03/17/1998 |
| 5722643 | Temperature compensated safety gas spring A gas spring includes a piston assembly or pack having an additional seal, pressure relief valve, and check valve that increases the output force of the gas spring. Various temperature compensation structures, also added to the piston pack, permits this i... | 03/03/1998 |
| 5702091 | Gas spring A gas spring for the hatchback or other closure member of a motor vehicle body automatically stops at an intermediate position between the fully closed and fully opened positions. A piston carrying a piston rod separates the interior of a cylindrical body... | 12/30/1997 |
| 5628496 | Pneumatic spring A pneumatic counterbalance spring includes a hollow cylinder defining a first internal chamber divided into a compression compartment and an extension compartment by a piston movably mounted in the chamber. The compression compartment contains pressurized... | 05/13/1997 |
| 5545233 | Swing phase control device A swing phase control device for an artificial knee joint which is provided with different first and second throttle controls to permit more natural flexing and stretching of the knee joint.... | 08/13/1996 |
| 5197718 | Self-contained gas springs interchangeable with coil springs A self contained gas spring which is interchangeable with a coil spring that is constructed such that it is not adversely affected by the deleterious effects of oil and other contaminants. The gas spring comprises a one-piece cylindrical upper body having... | 03/30/1993 |
| 5137124 | Pressure tube piston unit A pressure tube piston unit (10) with a pressure tube (11) which is subdivided into a first working space (14) and a second working space (15) by a piston (12) adapted to be extended and retracted on a piston rod (13). The two working spaces are adapted t... | 08/11/1992 |
| 5106065 | Self-blocking gas spring with temperature-responsive bypass valve A gas spring comprises a first bypass with a one-way valve that allows fluid to bypass the piston when the piston moves outward, a second bypass with a spring-biassed valve that allows fluid to bypass the piston when the piston is pushed inward with a for... | 04/21/1992 |
